Patent application number | Description | Published |
20080220807 | Multiple radio receive chain wireless communication devices - The present invention provides architectures and methods which use multiple radio receive chains in mobile devices to boost performance of the mobile devices. While a first set of the receive chains are assigned to a serving base station, another set of receive chains are dynamically allocated to neighbor base stations and/or to the serving base station depending upon present or expected system conditions and timing. A first synthesizer is configured to provide signals to the first and second set of receive chains. Other synthesizers are also configured to provide signals to the second set of receive chains. Thus, depending on the mode of operation, the second set of receive chains utilizes signals from a given synthesizer as needed. A priori data may be used to allocate specific receive chains to the serving base station, neighboring base stations or both. Unused synthesizers may be turned off to conserve power. | 09-11-2008 |
20080233885 | System And Method For Dynamically Improving Call Connection - A method for controlling an output of a power amplifier of a portable communication device includes determining a power level of a signal received at the portable communication device, generating a receive reference signal (RXLEV) that is indicative of the power level of the signal received at the portable communication device, and determining whether the receive reference signal is within a threshold value window. When the receive reference signal is within the threshold value window a nominal power output of a power amplifier in the portable communication device is transmitted during a random access channel signal transmission. When the receive reference signal is below the threshold value, a power output of the power amplifier in the portable communication device is increased during the random access channel signal transmission. When the receive reference signal is above the threshold value, a power output of the power amplifier in the portable communication device is decreased during the random access channel signal transmission. | 09-25-2008 |
20080273634 | Parallel preamble search architectures and methods - The present invention provides architectures and methods which enables faster and more power efficient detection of channel parameters used by a communication system. Various parallel preamble correlator structures are able to perform searches for multiple preambles in parallel. The received samples are correlated with different delays between the samples corresponding to the different possible channel parameters that may be used by the communication system. Processing elements used in the preamble search may be shared among the parallel preamble search sections of a given architecture to reduce costs and power consumption. Decimation and filtering may also be used to reduce the interference from adjacent channels. | 11-06-2008 |
20080287082 | Method and apparatus to improve network acquisition - The present invention provides architectures and methods which use multiple radio receive chains in mobile devices to provide enhanced performance, such as when acquiring and maintaining network access. A plurality of receive chains simultaneously perform signal level measurements across one or more measurement cycles. The number of RF channels upon which measurements are performed may be determined adaptively/dynamically. One or more criterion may be used to set signal level thresholds. If a measured signal for a given channel fails to satisfy a threshold, then that RF channel may be removed from the network acquisition process. If a measured signal for a channel exceeds another threshold, then that channel may be employed in further network acquisition processes, such as identifying potential beacon signal channels, verifying beacon signal channels and synchronizing the device to one of the beacon channels. | 11-20-2008 |
20080310536 | Adaptive joint channel estimation and data demodulation for OFDM systems - The present invention provides architectures and methods which implement adaptive joint channel estimation and data demodulation in wireless communication systems to provide enhanced performance of the communication link. While not limited to any particular air interface, such architectures and methods are particularly beneficial in OFDM systems. Channel estimates may be performed for pilot sub-carriers for a given OFDM symbol and filtering may then be performed for channel estimation of a given data subcarrier. Received symbols may be equalized and demodulated, and the channel estimate may be updated for the given data subcarrier. Such a procedure enables more accurate channel estimation and improved data demodulation, thereby enhancing system performance. | 12-18-2008 |
20090016351 | Error resilient protocol data unit boundary detection - The present invention provides systems and methods for boundary detection of protocol data units in a communication system. A protocol entity such as a header check sequence (HCS) validation circuit is used to compute header check sequences of protocol data units in a packet burst. If a given HCS is valid, then the payload of the respective protocol data unit may be used. However, if the given HCS is invalid, then a parallel sliding window is used to compute other possible HCSs to identify a protocol data unit boundary. Once the boundary is located, then the payload may be used. Even if a protocol data unit is invalid or a header is not found, other protocol data units in a packet burst may be used in accordance with aspects of the invention. Such operation reduces the number of retransmissions required due to invalid HCSs. | 01-15-2009 |
20090017766 | Adaptive use of multiple receive chains in wireless communication terminals - A wireless communication device is adaptively operated in a wireless communication network. The wireless communication device includes a receiver subsystem having a total number of available receive chains R | 01-15-2009 |
20090041166 | Method and apparatus to improve information decoding when its characteristics are known a priori - The present invention provides systems and methods for decoding received messages using a priori characteristics of selected message portions. A message which has been encoded in a particular format, such as a tail-biting convolutional coding, is received and decoded by utilizing the a priori information about the message. In one case, static-type receive bits in a portion of the message, such as a Frame Control Header, are used to reduce the number of trellis states at particular stages of the decoding process. A Viterbi-type decoding process may be employed in either a soft or hard decision mode. Reducing the number of trellis states improves the success rate for message decoding and improves receiver throughput. Power consumption may also be reduced. | 02-12-2009 |
20090087825 | SYSTEM AND METHOD FOR FACILITATING PRAYER - The present invention provides a system and method for assisting a user to pray. The method includes calculating a direction from the present position to a reference position; displaying the direction on a user interface; calculating an away distance between a home position and the present position, wherein the home position is defined by a user; generating praying instruction based on the away distance; and presenting the generated praying instruction via the user interface. | 04-02-2009 |
20100040156 | Dual-pass joint channel estimation and data demodulation for OFDM systems - The present invention provides architectures and methods which implement dual-pass joint channel estimation and data demodulation in communication systems to provide enhanced performance of the communication link. While not limited to any particular communication protocol, such architectures and methods are particularly beneficial in OFDM systems. Channel estimates may be performed using reference symbols and demodulated data symbols according to certain patterns of subcarriers for OFDM symbols. The channel estimates obtained from different patterns may be combined for dual-pass channel estimate which may have reduced estimation error. Such a procedure enables more accurate channel estimation and improved data demodulation, thereby enhancing system performance. | 02-18-2010 |
20120020294 | SYSTEM AND METHOD FOR DYNAMICALLY IMPROVING CALL CONNECTION - A method for controlling an output of a power amplifier of a portable communication device includes determining a power level of a signal received at the portable communication device, generating a receive reference signal (RXLEV) that is indicative of the power level of the signal received at the portable communication device, and determining whether the receive reference signal is within a threshold value window. When the receive reference signal is within the threshold value window a nominal power output of a power amplifier in the portable communication device is transmitted during a random access channel signal transmission. When the receive reference signal is below the threshold value, a power output of the power amplifier in the portable communication device is increased during the random access channel signal transmission. When the receive reference signal is above the threshold value, a power output of the power amplifier in the portable communication device is decreased during the random access channel signal transmission. | 01-26-2012 |
20120108284 | METHOD AND APPARATUS FOR MULTIPLE RADIO RECEIVE CHAINS IN WIRELESS COMMUNICATION SYSTEMS - The present invention provides architectures and methods which use multiple radio receive chains in mobile devices to boost performance of the mobile devices. While a first set of the receive chains are assigned to a serving base station, another set of receive chains are dynamically allocated to neighbor base stations and/or to the serving base station depending upon present or expected system conditions and timing. A first synthesizer is configured to provide signals to the first and second set of receive chains. Other synthesizers are also configured to provide signals to the second set of receive chains. Thus, depending on the mode of operation, the second set of receive chains utilizes signals from a given synthesizer as needed. A priori data may be used to allocate specific receive chains to the serving base station, neighboring base stations or both. Unused synthesizers may be turned off to conserve power. | 05-03-2012 |
20140219196 | METHOD AND APPARATUS FOR DETECTING INCONSISTENT CONTROL INFORMATION IN WIRELESS COMMUNICATION SYSTEMS - In order to support low latency and bursty internet data traffic, the 3GPP LTE wireless communication system uses dynamic allocation. To keep the allocation overhead lower, the system is designed such that the client terminal must perform a number of decoding attempts to detect resource allocations. During course of the decoding attempts a false resource allocation may be decoded by the client terminal. The false detection may lead to multiple issues for the performance efficiency of the client terminal and the overall communication system. A method and apparatus are disclosed than enable the detection of false resource allocation. This in turn improves the performance and efficiency of the client terminal and the wireless communication system. | 08-07-2014 |
20140301493 | METHOD AND APPARATUS FOR ADAPTIVE ANTENNA SHARING - A method and apparatus are disclosed for sharing antennas between modems for two or more different radio access technologies when two or more antennas may be present in a system. A method for coordination between the modem and the corresponding network element as well as the coordination between the two or more radio access technologies is provided. A method for determining when one of the modems does not need some of its antennas is also provided. The sharing of antennas across two or more modems enables efficient use of the antennas which is critical in small form factor mobile communication devices. | 10-09-2014 |
20150017954 | METHOD AND APPARATUS FOR ADAPTIVE EVENT NOTIFICATION CONTROL - Modern mobile communication devices have a number of features that enable the users to stay connected with people in their contacts list. These mobile devices also keep users informed about various events such as email, text messages, etc. While these features are useful they can be intrusive or distracting under some conditions. To reduce disturbances and intrusions, various notifications that inform the user about the new events on the mobile device may be temporarily disabled. However, event notifications must be explicitly re-enabled by the user when it is free to receive the notifications. The user may forget to re-enable the event notification which may lead to missed calls, event notifications, etc. A method and apparatus are provided that disable and enable event notifications on mobile devices adaptively to allow the users to reduce the intrusiveness of the mobile device notification when not required while minimizing any missed event notifications. | 01-15-2015 |
20150050961 | METHOD AND APPARATUS FOR AN ADD-ON COMMUNICATION DEVICE - A cover for a portable consumer electronic device is provided with an integrated mobile communication device. The integrated mobile communication device enables decoupling of the consumer electronics device from the modem used for wireless communication. This enables the certification and approval of the end consumer electronic device and the mobile wireless communication modem device to be done separately, and also enables the replacement of the mobile wireless communication modem device in an easier and less expensive manner. The user can choose among different wireless communication technologies such as 2G/3G/4G, as well as service from different network operators, without tying up the consumer electronic device with any particular mobile wireless communication modem technology or network operator. The cover includes a connector for connection between the integrated mobile communication device and the batter of the consumer electronic device. The cover may also include a backup battery for use by the consumer device. | 02-19-2015 |